ENGR00221854 HDMI: suspend/resume hdmi_phy fail to lock.

ENGR00221854 HDMI: suspend/resume hdmi_phy fail to lock.

HDMI PHY init function will been called four times during system resume.
The first call before pixel clock enable, so it will print
PHY PLL unlock message, but the PHY PLL will locked in the next
three times called. It will not affect HDMI PHY function.

Change message print function dev_err to dev_dbg.

Signed-off-by: Sandor Yu <R01008@freescale.com>